<div id="add_item">

  <ul>
    <li><input type="file" id="image_upload" accept="image/jpeg,image/gif,image/jpg,image/png"></li>
    <li><input type="text" id="item_name"></li>
    
    <!-- 
    Edw prepei na ftiaxnetai dynamika i lista me vasi ta attributes ta opoia yparxoun...
    -->
    <li>Attribute: <input type="text" id="attr_value"></li>
    <!--
    Sto selection prepei na mpoun ta stoixeia tou value dynamika..
    -->
    <li>Attribute: <select name="attribute_value"><option id="addItemSel"></option></select></li>
    
    <li>Attribute: <li><input type="radio" id="attr_value"></li></li>
    
  </ul>
  
  <input id="addItemBtn" type="submit" value="Add Item">
  
</div>